I think the bigger problems lie in Thunderlord for everyone and Windspeaker for Soraka. Both of those add too much utility to be healthy for the games. Assassins, Bruisers, and Mages do not need the Thunderlord buff as the extra burst is exactly what was wrong with Deathfire Grasp; The fact that anyone can easily get to it with relatively kit functional investments in the middle tree is a nuisance and there needs to be less universal masteries lwading up to it so that investing that deep in the tree will be left for those that actually need the burst, like supports. And Windspeaker, while good on healers and shielders like Sona, Orianna, Lulu, and Nami, is absolutely busted on Soraka. Not only has she become overpowered due to the nerfs to Grievous Wounds, but the added benefit of giving allies shields and amor/MR boosts when she massive heals them or herself is too much.